tree 60d34b3f1fa44c42a7fd18867531dc915007dfa0
parent 3d1c550874bcaf0d9b7fb66f601caed109074f4b
author Chuck Lever <chuck.lever@oracle.com> 1200519490 -0500
committer Trond Myklebust <Trond.Myklebust@netapp.com> 1201676771 -0500

NFS: Address memory leaks in the NFS client mount option parser

David Howells noticed that repeating the same mount option twice during an
NFS mount request can result in orphaned memory in certain cases.

Only the client_address and mount_server.hostname strings are initialized
in the mount parsing loop, so those appear to be the only two pointers that
might be written over by repeating a mount option.  The strings in the
nfs_server section of the nfs_parsed_mount_data structure are set only once
after the options are parsed, thus these are not susceptible to being
overwritten.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>